audio/telephone-event Parameters
- Last Updated
- 2011-12-07
- Available Formats
-
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Registry Included Below
Event Code Registry
- Registration Procedure(s)
-
Specification Required
- Expert(s)
-
Unassigned
- Reference
- [RFC4733]
- Available Formats
-
CSV
| Event Code | Event Name | Reference |
|---|---|---|
| 0 | DTMF digit "0" | [RFC4733] |
| 1 | DTMF digit "1" | [RFC4733] |
| 2 | DTMF digit "2" | [RFC4733] |
| 3 | DTMF digit "3" | [RFC4733] |
| 4 | DTMF digit "4" | [RFC4733] |
| 5 | DTMF digit "5" | [RFC4733] |
| 6 | DTMF digit "6" | [RFC4733] |
| 7 | DTMF digit "7" | [RFC4733] |
| 8 | DTMF digit "8" | [RFC4733] |
| 9 | DTMF digit "9" | [RFC4733] |
| 10 | DTMF digit "*" | [RFC4733] |
| 11 | DTMF digit "#" | [RFC4733] |
| 12 | DTMF digit "A" | [RFC4733] |
| 13 | DTMF digit "B" | [RFC4733] |
| 14 | DTMF digit "C" | [RFC4733] |
| 15 | DTMF digit "D" | [RFC4733] |
| 16 | Reserved | |
| 17-22 | Unassigned | |
| 23 | CRdSeg: second segment of V.8 bis CRd signal | [RFC4734] |
| 24 | CReSeg: second segment of V.8 bis CRe signal | [RFC4734] |
| 25 | MRdSeg: second segment of V.8 bis MRd signal | [RFC4734] |
| 26 | MReSeg: second segment of V.8 bis MRe signal | [RFC4734] |
| 27 | V32AC: A pattern of bits modulated at 4800 bits/s, emitted by a V.32/V.32bis answering terminal upon detection of the AA pattern. | [RFC4734] |
| 28 | V8bISeg: first segment of initiating V.8 bis signal | [RFC4734] |
| 29 | V8bRSeg: first segment of responding V.8 bis signal | [RFC4734] |
| 30 | V21L300: 300 bits/s low channel V.21 indication | [RFC4734] |
| 31 | V21H300: 300 bits/s high channel V.21 indication | [RFC4734] |
| 32 | ANS (V.25 Answer tone). Also known as CED (T.30 Called tone). | [RFC4734] |
| 33 | /ANS (V.25 Answer tone after phase shift). Also known as /CED (T.30 Called tone after phase shift) | [RFC4734] |
| 34 | ANSam (V.8 amplitude modified Answer tone) | [RFC4734] |
| 35 | /ANSam (V.8 amplitude modified Answer tone after phase shift) | [RFC4734] |
| 36 | CNG (T.30 Calling tone) | [RFC4734] |
| 37 | V.21 channel 1 (low channel), '0' bit | [RFC4734] |
| 38 | V.21 channel 1, '1' bit. Also used for ESiSeg (second segment of V.8 bis ESi signal). | [RFC4734] |
| 39 | V.21 channel 2, '0' bit | [RFC4734] |
| 40 | V.21 channel 2, '1' bit. Also used for ESrSeg (second segment of V.8 bis ESr signal). | [RFC4734] |
| 41-48 | Reserved | |
| 49 | CT (V.25 Calling Tone) | [RFC4734] |
| 50-51 | Unassigned | |
| 52 | ANS2225: 2225 Hz indication for text telephony | [RFC4734] |
| 53 | CI (V.8 Call Indicator signal preamble) | [RFC4734] |
| 54 | V.21 preamble flag (T.30) | [RFC4734] |
| 55 | V21L110: 110 bits/s V.21 indication for text telephony | [RFC4734] |
| 56 | B103L300: Bell 103 low channel indication for text telephony | [RFC4734] |
| 57 | V23Main: V.23 main channel indication for text telephony | [RFC4734] |
| 58 | V23Back: V.23 back channel indication for text telephony | [RFC4734] |
| 59 | Baud4545: 45.45 bits/s Baudot indication for text telephony | [RFC4734] |
| 60 | Baud50: 50 bits/s Baudot indication for text telephony | [RFC4734] |
| 61 | VBDGen: Tone patterns indicative of use of an unidentified modem type | [RFC4734] |
| 62 | XCIMark: A pattern of bits modulated in the V.23 main channel, emitted by a V.18 calling terminal. | [RFC4734] |
| 63 | V32AA: A pattern of bits modulated at 4800 bits/s, emitted by a V.32/V.23bis calling terminal. | [RFC4734] |
| 64-88 | Reserved | |
| 90-95 | Unassigned | |
| 96-112 | Reserved | |
| 113-114 | Unassigned | |
| 115 | North American SIT Segment 1 Low | [GR-674] |
| 116 | North American SIT Segment 1 High | [GR-674] |
| 117 | North American SIT Segment 2 Low | [GR-674] |
| 118 | North American SIT Segment 2 High | [GR-674] |
| 119 | North American SIT Segment 3 | [GR-674] |
| 120 | North American Coin Deposit | [GR-506] |
| 121 | Continuity check-tone | [RFC5244] |
| 122 | Continuity verify-tone | [RFC5244] |
| 123 | MF Code 11 (SS No. 5) or KP3P/ST3P (R1) | [RFC5244] |
| " | North American Ringback | [GR-506] |
| 124 | MF KP (SS No. 5) or KP1 (R1) | [RFC5244] |
| " | North American Coin Return | [GR-506] |
| 125 | MF KP2 (SS No. 5) or KP2P/ST2P (R1) | [RFC5244] |
| 126 | MF ST (SS No. 5 and R1) | [RFC5244] |
| " | North American Coin Collect / Operator Released | [GR-506] |
| 127 | MF Code 12 (SS No. 5) or KP'/STP (R1) | [RFC5244] |
| 128 | SS No. 5 or R1 digit "0" | [RFC5244] |
| " | North American Operator Attached | [GR-506] |
| 129 | SS No. 5 or R1 digit "1" | [RFC5244] |
| 130 | SS No. 5 or R1 digit "2" | [RFC5244] |
| " | North American Coin Collect | [GR-506] |
| 131 | SS No. 5 or R1 digit "3" | [RFC5244] |
| 132 | SS No. 5 or R1 digit "4" | [RFC5244] |
| 133 | SS No. 5 or R1 digit "5" | [RFC5244] |
| 134 | SS No. 5 or R1 digit "6" | [RFC5244] |
| 135 | SS No. 5 or R1 digit "7" | [RFC5244] |
| 136 | SS No. 5 or R1 digit "8" | [RFC5244] |
| " | North American Operator Released | [GR-506] |
| 137 | SS No. 5 or R1 digit "9" | [RFC5244] |
| 138-143 | Reserved | |
| 144 | ABCD signalling state '0000' | [RFC5244] |
| 145 | ABCD signalling state '0001' | [RFC5244] |
| 146 | ABCD signalling state '0010' | [RFC5244] |
| 147 | ABCD signalling state '0011' | [RFC5244] |
| 148 | ABCD signalling state '0100' | [RFC5244] |
| 149 | ABCD signalling state '0101' | [RFC5244] |
| 150 | ABCD signalling state '0110' | [RFC5244] |
| 151 | ABCD signalling state '0111' | [RFC5244] |
| 152 | ABCD signalling state '1000' | [RFC5244] |
| 153 | ABCD signalling state '1001' | [RFC5244] |
| 154 | ABCD signalling state '1010' | [RFC5244] |
| 155 | ABCD signalling state '1011' | [RFC5244] |
| 156 | ABCD signalling state '1100' | [RFC5244] |
| 157 | ABCD signalling state '1101' | [RFC5244] |
| 158 | ABCD signalling state '1110' | [RFC5244] |
| 159 | ABCD signalling state '1111' | [RFC5244] |
| 160-168 | Reserved | |
| 169 | Unassigned | |
| 170-173 | Reserved | |
| 174 | Metering pulse | [RFC5244] |
| 175 | Trunk unavailable | [RFC5244] |
| 176 | MFC forward signal 1 | [RFC5244] |
| 177 | MFC forward signal 2 | [RFC5244] |
| 178 | MFC forward signal 3 | [RFC5244] |
| 179 | MFC forward signal 4 | [RFC5244] |
| 180 | MFC forward signal 5 | [RFC5244] |
| 181 | MFC forward signal 6 | [RFC5244] |
| 182 | MFC forward signal 7 | [RFC5244] |
| 183 | MFC forward signal 8 | [RFC5244] |
| 184 | MFC forward signal 9 | [RFC5244] |
| 185 | MFC forward signal 10 | [RFC5244] |
| 186 | MFC forward signal 11 | [RFC5244] |
| 187 | MFC forward signal 12 | [RFC5244] |
| 188 | MFC forward signal 13 | [RFC5244] |
| 189 | MFC forward signal 14 | [RFC5244] |
| 190 | MFC forward signal 15 | [RFC5244] |
| 191 | MFC backward signal 1 | [RFC5244] |
| 192 | MFC backward signal 2 | [RFC5244] |
| 193 | MFC backward signal 3 | [RFC5244] |
| 194 | MFC backward signal 4 | [RFC5244] |
| 195 | MFC backward signal 5 | [RFC5244] |
| 196 | MFC backward signal 6 | [RFC5244] |
| 197 | MFC backward signal 7 | [RFC5244] |
| 198 | MFC backward signal 8 | [RFC5244] |
| 199 | MFC backward signal 9 | [RFC5244] |
| 200 | MFC backward signal 10 | [RFC5244] |
| 201 | MFC backward signal 11 | [RFC5244] |
| 202 | MFC backward signal 12 | [RFC5244] |
| 203 | MFC backward signal 13 | [RFC5244] |
| 204 | MFC backward signal 14 | [RFC5244] |
| 205 | MFC backward signal 15 | [RFC5244] |
| 206 | A bit signalling state '0' | [RFC5244] |
| 207 | A bit signalling state '1' | [RFC5244] |
| 208 | AB bit signalling state '00' | [RFC5244] |
| 209 | AB bit signalling state '01' | [RFC5244] |
| 210 | AB bit signalling state '10' | [RFC5244] |
| 211 | AB bit signalling state '11' | [RFC5244] |
| 212-255 | Unassigned |